Influencing mechanisms of sodium hexametaphosphate on molybdenite flotation using sea water

• Autorzy: Wang Lizhangzheng , Li Yubiao , Fan Ruihua , Fan Rong

Identyfikatory

DOI

10.5277/ppmp19031

• Języki publikacji: EN

Abstrakty

EN

Flotation using sea water has been considered as a promising alternative to concentrate molybdenite (MoS₂) under alkaline conditions due to scarcity of fresh water and increasingly strict regulations on the quality of discharged water. However, the MoS₂ recovery with sea water during flotation has not been satisfactory, owing to the depressing effects from the hydrophilic metallic species onto MoS₂ surface. This study combines experimental and theoretical studies of MoS₂ flotation to investigate how the physicochemical properties of MoS₂ vary with the addition of a dispersant, sodium hexametaphosphate (SHMP), and in sea and fresh water. Our experimental results show that the addition of SHMP during flotation has increased the recovery of MoS₂, via reducing the adsorption of the hydrophilic metallic precipitation onto MoS₂ surface. The DLVO calculation confirms that the addition of SHMP increases the floatability of MoS₂ by dispersing the formed hydrophilic metallic precipitation (Mg(OH)₂ colloids) from the MoS₂ surface, via reversing attraction force to repulsion force, thereby improving MoS₂ flotation recovery.

Słowa kluczowe

EN

sodium hexametaphosphate; flotation; molybdenite; sea water; mechanism

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 5
• Strony: 1091--1098
• Opis fizyczny: Bibliogr. 23 poz., tab., wykr., wz.

Twórcy

autor

Wang Lizhangzheng

• School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China

autor

Li Yubiao

• School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
• Hubei Key Laboratory of Mineral Resources Processing & Environment, Wuhan 430070, China

autor

Fan Ruihua

• School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China

autor

Fan Rong

• CSIRO Mineral Resources, Private Bag 10, Clayton South, VIC, 3169, Australia

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).